Valve



P 1945- s. GUARNASCHELLI 2,374,195

VALVE Filed Dec. 18, 1942 a 4 Z3- J2 INVENTOR fie Men Guarnaa'e/(Tz'ATTORN EY Patented Apr. 24, 1945 VALVE Stephen Guarnaschelli. MountVernon, N. Y., as-

signor to Packless Metal Products Corporation. New Rochelle, N. Y., acorporation of New York Application December 18. 1942, Serial No.469.426

10 Claims.

This invention relates to a valve of novel construction and its objectis to utilize the principle disclosed in Patent No. 2.301,038 issuedNovember 3, 1942. reissued May 11. 1943, as Re. 22,309, to preventleakage therein. More specifically its object is to provide a multipleseal in a valve to reduce leakage to a minimum. A further object is toprovide a valve which requires no packing.

These and other objects of the invention will appear in the followingspecification in which valves of different types will be shown anddescribed and the novel features of the invention will be set forth inthe claims.

Referring to the drawing:

Figure 1 is a sectional elevation of a valve which is made according toand embodies my invention:

Fig. 2 is a similar view of another type of valve which also embodiesthe invention.

In Fig. 1 l designates the body of the valve. This is constructed toform two internal rigid cy lindrical surfaces ll and I2 of differentdiameters and disposed one above the other. I3 is an intake passageleading into the chamber within the cylinder H which is closed at thebottom as shown at l4. I5 is an outlet passage above the intake portleading from the same chamber. The body is constructed to form ashoulder l6 between the cylindrical surfaces H and I2 and a transverseseat H at its upper end.

is a cap ailixed to the upper end of the body H] as by being screwedthereon, as shown at 2|. This cap forms a chamber 22. Its upper end hasan internally threaded bore 23.

30 is a movable member, the lower end of which is open to form a thincyilndricalwall or sleeve 3| which is slightly larger than the diameterof the surface H. When the valve is closed this wall closes the outletpassage 15. 32 is an annular flange in the chamber 22 from which dependsanother thin cylindrical wall or sleeve 33 which is slightly larger thanthe diameter of the surface l2. The sleeves 3| and 33 are sprung orforced into seating relation to the surfaces l l and I2 but arelongitudinally movable over these surfaces. The pressure of fluid withinthe valve forces the thin wall 3| into sealing engagement with thesurface II If any fluid under pressure escapes into the space betweenthe surface I 2 and the adjacent part of member 30, it will force thesleeve 33 into sealing engagement with the surface l2. This pressurescaling is important, especially as it keeps the valve leak-tight evenafter considerable wear on its parts. Fm'thermore, the lower surface offlange 32 on the seat I! forms another seal when the valve is closed.

The lower end of the sleeves are also expanded when the valve is closedby collars). 41 which have curved Or conical surfaces arranged to enterthe ends of the sleeves 3|, 33 respectively. These collars are held inposition and pressed upwardly by springs 42, 43 seated on the end M ofmember I0 and on the shoulder IS,

The foregoing description relates to the valve when closed. The upperpart of the member 30 forms an externally threaded post 35 which extendsupwardly through the cap 20 and engages the threads 23 therein. 36 is ahandle by means of which the member 30 is rotated and thus movedhorizontalily to open and close the port IS.

The same sealing principle is shown in Fig. 2 in which the connectionbetween the intake passage 13A and the outlet passage ISA is controlledby transverse ports l8 in the sleeve 31A which are brought into or outof alinement with the inlet and outlet passa es by a partial rotation ofthe member 30A. The cylindrical surfaces HA and I 2A are similar to thesurfaces H and I2. The other parts of the valve shown in Fig. 2 aresimilar to those shown in Fig. 1 except that the openings through thetop of the cap 20A and the post 35A are unthreaded and an auxiliarypassage I9 is provided in the body IOA to admit fluid under pressurefrom the intake passage l3A into the inside of the sleeve 3IA when theports l8 are out of alinement with the inlet and outlet passages. Theintake may enter the cylinder 1 l A directly in which case but one port18 will be required and no auxiliary pressure passage needed.

It will be understood that the invention is capable of modifications andthat changes in'the construction and in the arrangement of the variouscooperating parts may be made within the spirit and scope and I intendno limitations other than those expressed in the following claims.

What I claim is:

1. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading to said bore, and asolid member having a thin walled circumferentially continuous resilientsleeve extending therefrom into tight engagement with said bore andmovable therein to control communication between said passages, wherebyany pressure of fluid in the bore will be exerted on the inside of thesleeve to maintain said tight engagement.

2. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading to said bore, and asolid member having a thin walled circumferentially continuous resilientsleeve extending therefrom ablelongitudinally therein to controlcommunication between said passages, whereby any pressure of fluid inthe bore will be exerted on the inside of the sleeve to maintain saidtight engagement.

3. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading to said bore, and asolid member having a thin walled circumferentially continuous resilientsleeve extending therefrom into tight engagement with said bore androtatable therein, an opening in the sleeve arranged to controlcommunication between said passages, whereby any pressure of fluid inthe bore will be exerted on the inside of the sleeve to maintain saidtight engagement.

4. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading to said bore, and asolid member having a thin walled circumferentially continuous resilientsleeve extending therefrom into tight engagement with said bore andmovable therein to control communication between said passages, theoutside diameter of said sleeve slightly exceeding the inside diameterof said bore, whereby any pressure of fluid in the bore will be exertedon the inside of the sleeve to maintain said tight engagement.

5. A valve comprising a thick walled rigid body having a plurality ofcylindrical bores therein of different diameters, intake and outletpassages leading to one of said bores and a solid movable member havinga plurality of thin walled circumferent'ially continuous resilientsleeves extending therefrom into tight engagement with said bores, oneof said sleeves being arranged to control communication between saidpassages, whereby any pressure of fluid in the bores will be exerted onthe inside of the sleeves to maintain said tight engagement.

6. A valve comprising a thick walled rigid body having a plurality ofcylindrical bores therein of .into tight engagement with said bore andmov- 7. A valve comprising a thick walled rigid body having a pluralityof cylindrical bores therein of different diameters and a hat surfacenormal to the axis of the bores, intake and outlet passages leading tosaid bore and a movable member hav ing a plurality of thin walledcircumferenti ally continuous resilient sleeves extending therefrom intotight engagement with said bores, one of said sleeves being arranged tocontrol communication between said passages, whereby any pressure offluid in the bores will be exerted on the inside of the sleeve tomaintain said "ght engagement, said movable member having a flangeadapted to seat on said fiat surface.

8. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading to said bore, and asolid member having a thin walled eircumferentially continuous resilientsleeve extending therefrom into tight engagement with said bore andmovable therein to control communication between said passages, wherebyany pressure of fluid in the bore will be exerted on the inside of thesleeves to maintain said tight engagement, and mechanical means forexerting an expanding pressure on the end of the sleeve.

9. A valve comprising a thick walled rigid body having a cylindricalbore therein, intake and outlet passages leading tosaid bore, a solidmember therein having a thin walled circumferentially continuousresilient sleeve extending, therefrom into tight engagement with saidbore and movable therein to control communication between said passages,the outside diameter of said sleeve slightly exceeding the insidediameter of said bore, whereby any pressure of fluid in the bore will beexerted on'the inside of the sleeve to maintain said tight engagement,and mechanical means for exerting an expanding pressure on the end ofthe sleeve.

10. A valve comprising a thick walled rigid body having a plurality ofcylindrical bores therein of different diameters, intake and outletpassages leading to one of said bores, a solid movable member having aplurality of thin walled cir- 'bumferentially continuous resilientsleeves extending therefrom into tight engagement with said bores, oneof said sleeves being arranged to control communication between saidpassages, whereby any pressure of fluid in the bores will be exerted onthe inside of the sleeves to maintain said tight engagement, andresiliently actuated means for exerting an expanding pressure on the endof the sleeves.

STEPHEN GUARNASCHELLI.

